I'm not sure which four major events the landlord refers to. Write down what I think is important.

First, at the beginning of the novel, the Sun family met a great event. The son-in-law Wang Manyin asked the commune to arrest and reeducation through labor, which was a great event for the people at that time, but Shao An had not come yet, and Shao Ping arranged a chaotic family. After Shao An came back, he contacted Run Ye and asked Tian Fujun to approve the note and put it back to Wang Manyin.

Second, Sun Shaoan was arrested and criticized for expanding pig feed by several feet. This was not a big deal, but it happened that year. Coupled with the political struggle in Shuangshui Village, Tian was afraid of increasing prestige and deliberately opposed it. Sun Shaoan fought back and accepted the criticism.

Third, it was a great event that changed Sun Shaoan's life. Faced with Tian Runye's pursuit and signal, Shao An could not accept it because of family, family background and other factors. Finally, she gave up her childhood friends and went to Shanxi to marry He Xiulian.

Four, 78 years later, after opening up and invigorating, Sun Shaoan didn't want to farm in the village all his life. He set up a brick factory in the village. After a small scale, he wanted to help the villagers make money and decided to expand the scale. As a result, he was cheated, the brick factory closed down and owed a lot of foreign debts. The sudden blow almost disheartened Sun Shaoan, who was silent for half a year. Finally, with the encouragement of his wife and family and the help of friends, he got a loan, resumed the production of the brick factory, paid off his foreign debt and made a lot of money. He also intends to spend money to rebuild the school in the village. At this time, something unfortunate happened. Just as he was preparing for the school anniversary, his wife Xiulian suffered from lung cancer because of overwork.

From these things, we can see Sun Shaoan's simple, calm and enterprising spirit, but he is also an ordinary and ordinary farmer on the Loess Plateau.